The invention provides an adjusting method and apparatus for a carrier wave bandwidth of a TD-LTE system. With the method and apparatus, a problem that the spectrum efficiency of single carrier frequency is low because of too large reserved bandwidth of the adjacent carrier waves inside the single operator can be solved. The adjusting method applied to a single frequency band of the continuous spectrum resource comprises: all reserved bandwidths of a plurality of carrier waves in a single frequency band are obtained, wherein the carrier waves include reserved bandwidths and emission bandwidths; and according to the sum of all reserved bandwidths of the multiple carrier waves, the emission widths of at least one of the carrier waves is adjusted, wherein the emission width of the to-be-adjusted carrier wave after adjustment is larger than the standard carrier wave width of the carrier wave before adjustment, the sum of the emission widths of the multiple carrier waves after adjustment is larger than that of the emission width of the carrier waves before adjustment, and the sum of the reserved widths of multiple carrier waves after adjustment is less than that of the reserved widths of the carrier waves before adjustment. Therefore, the larger emission widths can be obtained by adjustment, so that the spectrum efficiency of the continuous frequency band and the total capacity of the system can be improved.